Baird brings office boy William Taynton in front of the camera to become the first face televised.
John Baird achieves the first live television image with tone graduations (not silhouette or duotone images) in his laboratory. Zworykin first demonstrates his electric camera tube and receiver for Westinghouse corporation executives, transmitting the still image of an "X". Vladimir Zworykin applies for a patent for color television. Charles Francis Jenkins achieves the first synchronized transmission of a moving silhouette (shadowgraphs) and sound, using 48 lines, and a mechanical system. 1925: John Logie Baird performs the first public demonstration of his "televisor" at the Selfridges department store on London's Oxford Street. Vladimir Zworykin files a patent application for the kinescope, a television picture receiver tube. 1924: John Logie Baird demonstrates a semi-mechanical television system with the transmission of moving silhouette images in England. 
The patent is not granted until 1938 after significant revisions and patent interference actions. Vladimir Zworykin applies for a patent for an all-electronic television system, the first ancestor of the electric scanning television camera.This time 48-line moving silhouette images are transmitted at 16 frames per second from Washington to Anacostia Navy station. 1923: Charles Jenkins first demonstrates "true" television with moving images.
Philo Farnsworth first describes an image dissector tube, which uses cesium to produce images electronically, but will not produce a working model until 1927. to the Navy station NOF in Anacostia by telephone wire, and then wirelessly back to Washington. A set of static photographic pictures is transmitted from Washington, D.C. 
1922: Charles Francis Jenkins' first public demonstration of television principles.1877: Bell Telephone Company is founded.
1876: Alexander Graham Bell invents the telephone.
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